Grinding or polishing machines
Machine tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass: > Grinding or polishing machines
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8464.20.01
CNC Granite Surface Grinder
A computer numerically controlled machine designed for precision grinding flat surfaces on granite slabs used in countertops and monuments. It falls under HTS 8464.20.01 as a grinding machine specifically for working stone materials like granite to achieve smooth, level finishes.
Marble Slab Polishing Machine
Automated polishing line for creating high-gloss finishes on marble slabs for flooring and wall tiles. Classified under HTS 8464.20.01 for polishing machines dedicated to stone like marble, a mineral material.
Concrete Floor Grinder
Planetary head grinder for leveling and smoothing freshly poured or existing concrete floors in construction sites. HTS 8464.20.01 applies to grinding machines for concrete, a 'like mineral material' per chapter notes.
Ceramic Tile Grinder
Bridge-style grinder for rectifying edges and surfaces of ceramic tiles to precise dimensions post-firing. HTS 8464.20.01 covers grinding machines for ceramics, explicitly listed mineral materials.
Quartz Wafer Lapping Machine
Double-sided lapping machine for achieving flatness tolerances on quartz crystal wafers used in oscillators. As quartz is stone, grinding/lapping falls under HTS 8464.20.01 for stone working.
Porcelain Edge Grinding Machine
CNC-controlled grinder for chamfering and smoothing porcelain slab edges for high-end bathroom vanities. Ceramics classification under HTS 8464.20.01 for mineral material grinding.
Glass Edge Polisher
Straight-line machine for bevelling and polishing edges of flat glass sheets used in windows and mirrors. Falls under HTS 8464.20.01 for cold working glass via polishing processes.
Stone Crystal boule Grinder
Precision grinder for semiconductor crystal boules like quartz or sapphire to exact diameters before wafer slicing. While similar to statistical note equipment, stone/mineral versions classify under HTS 8464.20.01 for stone grinding.
Asbestos-Cement Sheet Polisher
Wide-belt polisher for finishing asbestos-cement roofing and siding sheets to uniform thickness. Explicitly covered under HTS 8464.20.01 for 'asbestos-cement or like mineral materials' polishing.
Diamond Wire Glass Grinding Saw
Hybrid machine using diamond wire for grinding/polishing glass edges in solar panel production. Cold working glass provision of HTS 8464.20.01 applies despite saw-like appearance.